CVE-2025-7569 is a cross-site scripting (XSS) vulnerability identified in the Bigotry OneBase product, specifically affecting versions 1.3.0 through 1.3.6. The vulnerability resides in the parse_args function within the /tpl/think_exception.tpl file. This function improperly handles the 'args' parameter, allowing an attacker to inject malicious scripts that can be executed in the context of a victim's browser. The vulnerability is remotely exploitable without requiring authentication, although user interaction is necessary for the malicious script to execute (e.g., a victim clicking a crafted link). The vulnerability has been publicly disclosed, but the vendor has not responded or provided a patch at the time of disclosure. The CVSS v4.0 base score is 5.1, indicating a medium severity level. The attack vector is network-based with low attack complexity, no privileges required, and user interaction needed. The impact primarily affects the integrity and confidentiality of data accessible via the affected web application, as malicious scripts could steal session tokens, perform actions on behalf of users, or redirect users to malicious sites. Availability is not impacted. No known exploits are currently observed in the wild, but public disclosure increases the risk of exploitation attempts. The lack of vendor response and absence of patches heighten the urgency for organizations using OneBase to implement mitigations or consider alternative solutions.

For European organizations using Bigotry OneBase versions 1.3.0 to 1.3.6, this vulnerability poses a risk of client-side attacks that can lead to session hijacking, credential theft, or unauthorized actions performed with the privileges of authenticated users. This can compromise the confidentiality and integrity of sensitive data processed or stored by the application. Organizations in sectors such as finance, healthcare, government, and critical infrastructure, where data protection is paramount, may face regulatory consequences under GDPR if personal data is exposed or mishandled due to exploitation of this vulnerability. Additionally, reputational damage and operational disruptions could result from successful attacks. Since the vulnerability requires user interaction, phishing or social engineering campaigns could be used to increase exploitation success. The absence of vendor patches means organizations must rely on compensating controls to reduce risk. The medium severity rating reflects a moderate but tangible threat that should be addressed promptly to prevent escalation or chaining with other vulnerabilities.

1. Immediate mitigation should include implementing strict input validation and output encoding on the 'args' parameter within the affected template to neutralize malicious scripts. If source code access is available, developers should sanitize inputs using established libraries or frameworks that prevent XSS. 2. Deploy Web Application Firewalls (WAFs) with custom rules to detect and block suspicious payloads targeting the vulnerable parameter. 3. Educate users and administrators about phishing risks and encourage cautious behavior when clicking on links, especially those received from untrusted sources. 4. Monitor application logs and network traffic for unusual activities indicative of exploitation attempts. 5. If feasible, isolate or restrict access to the affected OneBase instances to trusted networks until a patch or update is available. 6. Engage with the vendor or community to seek updates or patches and plan for timely application once released. 7. Consider upgrading to a newer, unaffected version if available or migrating to alternative software solutions with better security support. 8. Implement Content Security Policy (CSP) headers to reduce the impact of XSS by restricting script execution sources.